21486878

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{90281}}^1$

素因数の和:90307

約数の個数: 16

約数和(自身を含む): 39001824

約数和(自身を除く): 17514946

約数列:

[1, 2, 7, 14, 17, 34, 119, 238, 90281, 180562, 631967, 1263934, 1534777, 3069554, 10743439, 21486878]

約数ペア:

[(1, 21486878), (2, 10743439), (7, 3069554), (14, 1534777), (17, 1263934), (34, 631967), (119, 180562), (238, 90281)]